What’s Vulnerable › Vulnerabilities

CVE-2026-52833: Nuclio: Unsanitized runtimeAttributes.repositories injected into Groovy build.gradle leads to build-time RCE

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-02 · updated 2026-09-09
• Weakness: CWE-94

Description

Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.16.5, Nuclio's Java runtime generates a build.gradle file during function builds using Go's text/template package. The template renders runtimeAttributes.repositories[] values with the {{ . }} action, which performs no escaping. An attacker can embed a closing brace (}) to break out of the repositories {} block and append arbitrary Groovy statements that execute unconditionally during the Gradle configuration phase. This issue has been patched in version 1.16.5.

Affected products

• nuclio: before 1.16.5

References

• https://github.com/nuclio/nuclio/commit/4c78040c759068e927f3ed7c6507543c15d4ae56
• https://github.com/nuclio/nuclio/pull/4149
• https://github.com/nuclio/nuclio/releases/tag/1.16.5
• https://github.com/nuclio/nuclio/security/advisories/GHSA-3v79-m2cg-89ww
• https://github.com/nuclio/nuclio/security/advisories/GHSA-3v79-m2cg-89ww

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